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Abstract
This study aimed to Comparison of dyad training method with cooperative and competitive approach in the learning of Basketball Free Throw. The study sample included 24 girl’s students aged 13-15 years old who had no experience in free throw. Based on pretest scores, the participants were assigned to either the cooperative dyad training group or the competitive dyad training group. In the competitive dyad training condition, individuals in each dyad had to compete with each other to secure the highest free throw score. At the end of each training session the winner was rewarded. In contrast, in the cooperative dyad training condition, the dyads that attained the score of 75 or more in each training session were rewarded. After the 10th training session, the acquisition of free throw skill was assessed. A week later, the retention and the transfer of free throw skill were assessed. The results indicated that, with regard to the acquisition of free throw skill, in both conditions the participants had made statistically significant progress. In terms of the acquisition and the retention of the target skill, no statistically significant differences were observed between cooperative and competitive training groups. However, with regard to transfer test, the cooperative training group outperformed the competitive training group. Therefore, in comparison to competitive dyad training, cooperative dyad training is more conducive to the acquisition and the retention of free throw skill.

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Video feedback is a type of augmented feedback that includes showing an athlete or performing a skill with a video clip of oneself or another person performing a particular skill. The aim of the present study was to determine the effectiveness of dyad training with video feedback on learning crawl swimming. For this purpose, 24 male students ranging in age from 11 to 17 years, who had no previous experience in learning crawl swimming, formed two groups of 12 people in dual practice and dyad training with video feedback. Both groups were first justified by the instructor, then in the double exercise group, one of the trainees entered the water and the other watched him perform out of the water, and after trying, they reviewed the mistakes and movements with their friend. in the dyad rehearsal group, one of the friends filmed another performance and showed it to him. The training intervention lasted for 8 sessions and 10 training attempts in each session. After the end of the eighth session, the 10-meter breast crawl swimming acquisition test was performed, and then a reminder test was performed again one week later and filmed. The results showed that the two groups had significant differences in both acquisition and retention, and the dyad training group with video feedback performed better overall. Based on the results, it can be concluded that the dyad training with video feedback method, in addition to being cost-effective in terms of energy consumption and training space, is also more effective than dyad training in swimming training.